GB/T 24238-2017_English: PDF (GB/T24238-2017)
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| GB/T 24238-2017 | English | 90 |
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Hot-rolled wire rod for prestressed steel wire and strand
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GB/T 24238-2017
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| GB/T 24238-2009 | English | 160 |
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Hot rolled wire rod for prestressed steel
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GB/T 24238-2009
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| Standard ID | GB/T 24238-2017 (GB/T24238-2017) | | Description (Translated English) | Hot-rolled wire rod for prestressed steel wire and strand | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H44 | | Classification of International Standard | 77.140.60 | | Word Count Estimation | 7,776 | | Date of Issue | 2017-05-31 | | Date of Implementation | 2017-12-01 | | Older Standard (superseded by this standard) | GB/T 24238-2009 | | Quoted Standard | GB/T 223.5; GB/T 223.12; GB/T 223.14; GB/T 223.19; GB/T 223.23; GB/T 223.59; GB/T 223.62; GB/T 223.63; GB/T 223.67; GB/T 223.69; GB/T 223.72; GB/T 224; GB/T 228.1; GB/T 2101; GB/T 2975; GB/T 4336; GB/T 6394; GB/T 8170; GB/T 10561; GB/T 14981-2009; GB/T 20 | | Drafting Organization | Anshan Iron and Steel Group Co., Ltd., China Steel Group Co., Ltd., Qingdao Special Steel Co., Ltd., Tianyou Yinlong Prestressed Materials Co., Ltd., Baosteel Group Co., Ltd., Jiangsu Steel Group Co., Ltd., Jiangsu Steel Group Co., Ltd., Nantong Wire Products Co., Ltd., Metallurgical Industry Information Standards Institute | | Administrative Organization | National Steel Standardization Technical Committee (SAC/TC 183) | | Proposing organization | China Iron and Steel Industry Association | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, China National Standardization Administration Committee | | Summary | This standard specifies the grades, order contents, dimensions, dimensions, tolerances, technical requirements, test methods, inspection rules, packaging, marking and quality certificates for pre-stressed and stranded wire rods. This standard applies to pre-stressed steel wire and strand with hot-rolled wire rod (hereinafter referred to as wire rod). | | Standard ID | GB/T 24238-2009 (GB/T24238-2009) | | Description (Translated English) | Hot rolled wire rod for prestressed steel | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H44 | | Classification of International Standard | 77.140.60 | | Word Count Estimation | 8,857 | | Date of Issue | 2009-07-15 | | Date of Implementation | 2010-04-01 | | Quoted Standard | GB/T 222; GB/T 223.5; GB/T 223.9; GB/T 223.12; GB/T 223.23; GB/T 223.37; GB/T 223.62; GB/T 223.63; GB/T 223.67; GB/T 223.69; GB/T 223.79; GB/T 224; GB/T 228; GB/T 2101; GB/T 2975; GB/T 4336; GB/T 6394; GB/T 10561; GB/T 13298; GB/T 14981-2009; GB/T 20066; GB/T 20123; GB/T 20125; GB/T 24242.1-2009; YB/T 081; YB/T 169 | | Drafting Organization | Angang Steel Company Limited | | Administrative Organization | National Steel Standardization Technical Committee | | Regulation (derived from) | National Standard Approval Announcement 2009 No.9 (Total No.149) | | Proposing organization | China Iron and Steel Association | | Issuing agency(ies) | Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China | | Summary | This standard specifies the use of prestressed steel wire and strand wire rod grades, ordering content, dimensions, shape, test methods, , weight and tolerance, technical requirements for inspection rules, packaging, marking and quality certification. This standard applies to the manufacture of prestressed steel and hot-rolled steel wire rod (hereinafter referred to as wire rod). |
GB/T 24238-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.60
H 44
Replacing GB/T 24238-2009
Hot-Rolled Wire Rod for
Prestressed Steel Wire and Strand
ISSUED ON. MAY 31, 2017
IMPLEMENTED ON. DECEMBER 1, 2017
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of PRC.
3. No action is required - Full-copy of this standard will be automatically &
immediately delivered to your EMAIL address in 0~60 minutes.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Grade ... 6
4 Booking Content ... 6
5 Dimension, Shape, Weight and Permissible Deviation ... 7
6 Technical Requirements ... 7
7 Test Methods ... 9
8 Inspection Rules ... 10
9 Rounding Off for Values ... 10
10 Package, Marking and Quality Certificate ... 11
Foreword
This Standard was drafted as per the rules specified in GB/T 1.1-2009.
This Standard replaced GB/T 24238-2009 Hot Rolled Wire Rod for Prestressed Steel
Wire and Strand; compared with GB/T 24238-2009, this Standard has the major
technical changes as follows besides the editorial modification.
--- Expand the specification range of wire rod;
--- Cancel four grades of YL72A, YL77A, YL82A, YL87A;
--- Elaborate the sorbate content of each grade;
--- Confirm allowable level requirements for mesh cementite and center martensite;
--- Modify the mechanical properties;
--- Enhance the requirements for decarburization depth.
This Standard was proposed by China Iron and Steel Industry Association.
This Standard shall be under the jurisdiction of National Technical Committee for
Standardization of Steel (SAC/TC 183).
Drafting organizations of this Standard. Angang Steel Company Limited, Jiangsu
Shagang Group Co., Ltd., Jiangsu Yonggang Group Co., Ltd., Tianjin Iron & Steel
Group Co., Ltd., Zenith Steel Group Co., Ltd., Qingdao Special Iron and Steel Co., Ltd.,
Tianjin Silvery Dragon Prestressed Materials Co., Ltd., Baosteel Group Nantong Wire
Products Co., Ltd., and China Metallurgical Information and Standardization Institute.
Chief drafting staffs of this Standard. Di Liping, Yin Yi, An Huizhu, Ren Maoyong, Ren
Cuiying, Wang Lingjun, Nie Wenjin, Sui Zhisong, Sun Guangtao, Liu Cheng, Wang
Zhengmao, Xie Tieqiao, Chen Liang, Yu Jingqi, Hu Haiping, Liu Xuesen, Li Xiaobo,
Shen Aiguo, Meng Zhaoxian, and Gui Zhonglin.
The historical edition replaced by this Standard is as follows.
--- GB/T 24238-2009.
Hot-Rolled Wire Rod for
Prestressed Steel Wire and Strand
1 Scope
This Standard specifies the grade, ordering content, dimension, shape, weight and
permissible deviation, technical requirements, test methods, inspection rules, package,
marking and quality certificate of wire rod for prestressed steel wire and strand.
This Standard is applicable to the hot-rolled wire rod for prestressed steel wire and
strand (hereinafter referred to as wire rod).
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
GB/T 222 Permissible Tolerances for Chemical Composition of Steel Products
GB/T 223.5 Methods for Chemical Analysis of Iron, Steel and Alloy - The Reduced
Molybdosilicate Spectrophotometric Method for the Determination of Acid-Soluble
Silicon Content
GB/T 223.12 Methods for Chemical Analysis of Iron, Steel and Alloy - The Sodium
Carbonate Separation-Diphenyl Carbazide Photometric Method for the
Determination of Chromium Content
GB/T 223.14 Methods for Chemical Analysis of Iron, Steel and Alloy - The N-
Benzoy-N-Phenylhydroxylamine Extraction Photometric Method for the
Determination of Vanadium Content
GB/T 223.19 Methods for Chemical Analysis of Iron, Steel and Alloy – The
Neocuproine-chloroform Extraction Photometric Method for the Determination of
Copper Content
GB/T 223.23 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Dimethylglyoxime Spectrophotometric Method for the Determination of Nickel
Content
GB/T 223.59 Iron, Steel and Alloy - Determination of Phosphorus Content -
Bismuth Phosphomolybdate Blue Spectrophotometric Method and Antimony
Phosphomolybdate Blue Spectrophotometric Method
GB/T 223.62 Methods for Chemical Analysis of Iron, Steel and Alloy - the Butyl
Acetate Extraction Photometric Method for the Determination of Phosphorus
Content
GB/T 223.63 Methods for Chemical Analysis of Iron, Steel and Alloy – The Sodium
(Potassium) Periodate Photometric Method for the Determination of Manganese
Content
GB/T 223.67 Iron, Steel and Alloy - Determination of Sulfur Content - Methylene
Blue Spectrophotometric Method
GB/T 223.69 Methods for Chemical Analysis of Iron, Steel and Alloy - the Gas-
Volumetric Method after Combustion in the Pipe Furnace for the Determination of
Carbon Content
GB/T 223.72 Iron, Steel and Alloy - Determination of Sulfur Content - Gravimetric
Method
GB/T 224 Determination of Depth of Decarburization of Steels
GB/T 228.1 Metallic Materials - Tensile Testing - Part 1. Method of Test at Room
Temperature
GB/T 2101 Generel Provisions on Acceptance, Package, Marking and Quality
Certificate for Profile Steel
GB/T 2975 Steel and Steel Products – Location and Preparation of Test Pieces for
Mechanical Testing
GB/T 4336 Standard Test Method for Spark Discharge Atomic Emission
Spectrometric Analysis of Carbon and Low-Alloy Steel (Routine Method)
GB/T 6394 Metal - Methods for Estimating the Average Grain Size
GB/T 8170 Rules of Rounding off for Numerical Values & Expression and
Judgement of Limiting Values
GB/T 10561 Steel - Determination of Content of Nonmetallic Inclusions -
Micrographic Method Using Standards Diagrams
GB/T 13298 Inspection Methods of Microstructure for Metals
GB/T 14981-2009 Dimension Shape Mass and Tolerance for Hot-Rolled Round
Wire Rod
......
GB/T 24238-2009
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.60
H 44
Hot rolled wire rod for prestressed steel
ISSUED ON. JULY 15, 2009
IMPLEMENTED ON. APRIL 01, 2010
Issued by.
General Administration of Quality Supervision, Inspection
and Quarantine of the People’s Republic of China;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3
1. Scope ... 4
2. Normative references ... 4
3. Designation ... 6
4. Ordering content ... 6
5. Size, shape, weight and allowable deviation ... 6
6. Technical requirements ... 7
7. Test method ... 9
8. Inspection rules ... 10
9. Rounding-off of numerical value ... 10
10. Packing, marking and quality certificate... 10
Annex A (Informative) Comparison on Designations of this Standard and
other Standards ... 11
Foreword
Annex A of this Standard is informative.
This Standard was proposed by China Iron and Steel Industry Association.
This Standard shall be under the jurisdiction of National Technical Committee of
Standardization for Steel.
Drafting organizations of this Standard. Angang Steel Co., Ltd., China Metallurgical
Information And Standardization Institute, Shougang Group, Qingdao Iron and Steel Co.,
Ltd., Jiangsu Shagang Group Co., Ltd., Xingtai Iron & Steel Co., Ltd. AND Xuanhua Iron
and steel group Co., Ltd.
Main drafters of this Standard. Zhang Peng, Piao Zhimin, Wang Liping, Zheng Shifen,
Chen Shouqin, Yin Junfeng, Zhang Yuxin, Zhang Junfeng, Wang Lingjun and Dai
Shifeng.
Hot rolled wire rod for prestressed steel
1. Scope
This Standard specifies the designation, ordering content, size, shape, weight, allowable
deviation, technical requirements, testing methods, inspection rules, package, mark and
quality certificate of hot rolled wire rod for prestressed steel.
This Standard is applicable for the manufacture of hot rolled wire rod for prestressed steel
(hereinafter referred to as wire rod).
2. Normative references
The articles contained in the following documents have become part of this document
when they are quoted herein. For the dated documents so quoted, all subsequent
modifications (including all corrections) or revisions made thereafter do not apply to this
Standard. However, the parties who reach an agreement according to this Standard are
encouraged to study whether the latest versions of these documents may be used. For
the undated documents so quoted, the latest versions (including all modification sheets)
apply to this document.
GB/T 222 Permissible tolerances for chemical composition of steel products
GB/T 223.5 Steel and iron - Determination of acid-soluble silicon and total silicon
content - Reduced molybdosilicate spectrophotometric method
GB/T 223. 9 Iron steel and alloy - Determination of aluminium content - Chrome azurol
S photometric method
GB/T 223. 12 Methods for chemical analysis of iron, steel and alloy - The sodium
carbonate separation-diphenyl carbazide photometric method for the determination of
chromium content
GB/T 223.19 Methods for chemical analysis of iron steel and alloy - The
neocuproine-chloroform extraction photometric method for the determination of
copper content
GB/T 223.23 Iron steel and alloy - Determination of nickel content - The
dimethylglyoxime spectrophotometric method
GB/T 223.37 Methods for chemical analysis of iron steel and alloy - The indophenal
blue photometric methods for the determination of nitrogen content after distillation
separation
GB/T 223. 62 Methods for chemical analysis of iron, steel and alloy - The butyl acetate
extraction photometric method for the determination of phosphorus content
GB/T 223. 63 Methods for chemical analysis of iron, steel and alloy - The sodium
(potassium) periodate photometric method for the determination of manganese
content
GB/T 223. 67 Iron steel and alloy - Determination of sulfur content - Methylene blue
spectrophotometric method
GB/T 223. 69 Iron steel and alloy - Determination of carbon contents - Gas-volumetric
method after combustion in the pipe furnace
GB/T 223.79 Iron and steel - Determination of multi-element contents - X-ray
fluorescence spectrometry (Routine method)
GB/T 224 Determination of depth of decarburization of steels
GB/T 228 Metallic materials - Tensile testing at ambient temperature
GB/T 2101 General requirement of acceptance packaging marking and certification for
section steel
GB/T 2975 Steel and steel products - Location and preparation of test pieces for
mechanical testing
GB/T 4336 Standard test method for spark discharge atomic emission spectrometric
analysis of carbon and low-alloy steel (routine method)
GB/T 6394 Metal - Methods for estimating the average grain size
GB/T 10561 Steel - Determination of content of nonmetallic inclusions - Micrographic
method using standards diagrams
GB/T 13298 Metal - Inspection method of microstructure
GB/T 14981-2009 Dimension shape mass and tolerance for hot-rolled round wire rod
GB/T 20066 Steel and iron - Sampling and preparation of samples for the
determination of chemical composition
GB/T 20123 Steel and iron - Determination of total carbon and sulfur content Infrared
absorption method after combustion in an induction furnace (routine method)
GB/T 20125 Low-alloy steel - Determination of multi-element contents - Inductively
coupled plasma atomic emission spectrometric method
GB/T 24242.1-2009 Non-alloy steel wire rods for conversion to wire - Part 1. General
requirements
YB/T 081 Rule for rounding off of numerical values and judgement of testing values for
technical standards of metallurgy
YB/T 169 Metallographic test method for the sobit percent in the high carbon steel wire
rod
3. Designation
The designation of steel is composed of Chinese phonetic alphabet (capitalized) of
“stress”, average carbon content and the symbols that distinguish the manganese
content. For example. YL77A, YL82B.
Where.
YL - Initial Chinese phonetic alphabets of “stress”;
72, 77, 82, 87 - Average carbon content specified in the standard (in 0.1‰);
A, B - Symbols that distinguish the different manganese contents in the chemical
components.
4. Ordering content
When placing an order, the following information shall be included in the contract.
a) Product name;
b) Standard No.;
c) Designation;
d) Nominal diameter of wire rod;
e) Size and shape’s accuracy level;
f) Weight;
g) Packing way and marking requirements (if required);
h) Other requirements.
5. Size, shape, weight and allowable deviation
5.1 Size, shape and allowable deviation of wire rod shall meet the provisions of Grade-B
Annex A
(Informative)
Comparison on Designations of this Standard and other Standards
Comparison on designations of this Standard and other standards is shown in Table A.1.
This Standard ISO 16120-4 JIS G3502 JIS G3506 YB/T 146
YL72A — SWRS 72A SWRH 72A 72A
YL72B C72D2 SWRS 72B SWRH 72B 72MnA
YL77A — SWRS 77A SWRH 77A 77A
YL77B C76D2, C78D2 SWRS 77B SWRH 77B 77MnA
YL82A — SWRS 82A SWRH 82A 82A
YL82B C82D2 SWRS 82B SWRH S2B 82MnA
YL87A — SWRS 87A — —
YL87B C86D2, C88D2 SWRS 87B — —
......
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